How to build a raised bed with railway sleepers Chose where you want to put the raised bed. Lay the railway sleepers on the ground. Fasten them together. Stack and fix a second layer (if you want the raised bed to be higher) Attach a plastic membrane (see photo above – optional with raised bed) Fill with soil. Fill with plants! Click to see full answer. In this manner, can you lay railway sleepers on soil?You can also place the sleepers directly on the soil but you might have issues with water pooling around the edges, causing the wood to rot quicker. If you decide to lay them directly on soil, put down a waterproof plastic membrane first to reduce contact with moisture.One may also ask, how do you start a flower bed? To start a flower garden, begin by removing the grass and tilling the soil in the area you intend to use for your garden. Then, add compost to make the soil more fertile so your flowers will grow better. Next, select and buy flowers from a garden store or nursery. Similarly, you may ask, how do you make a sleeper wall? Constructing a retaining wall out of upright sleepers is pretty straightforward. Simply dig a trench, lower the sleepers in vertically side by side, and then backfill with a dry concrete mix, that you can ram down around the railway sleepers untill the wall is rigid.Should raised beds be lined?You can line your raised bed to make it more durable and to prevent toxics from leaching into the soil. For lining, use landscape fabric found at garden supply stores or cloth fabric from clothing. Avoid non-porous plastic, as it can retain too much water and discourage beneficial insects and worms.